Removable creeper for tractor belts



directly to the belts themselves.

Patented ai. 15, 1.9 27.

UNITED STA TES PAT NroFHoE.

' Anonrnn xitennssn, or rams, rnancn.

REMOVABLE cmmrna For. arnacron BELTS.

Application and August 14,1924, Serial No;

Wit-h vehicles propelled by endless track belts the ractice, inorder to increase the grip on slippery grounds, isto use creepers or spikes secured by means of bolts or screws In order to be fitted with such creepers,

belts made of some tough material, of rubberized fabric for instance,.requ1re-to be formed "with holes for the bolts and these holes are impractical owingto the serious drawbacks which they involve: weakening of the tread,

inadequate durability of the' material serv- 'ing as the tread of the belt etc.

,The object of my invention is to provide 1 a creeper devicefor. tough treads of mechanivention more clearly understood, I have cal vehicles and, in order to make my inillustrated, as an example, .an embodiment thereof in and by a drawing appended hereto and wherein:

. Figure 1 is a side 'elevation'of the invention applied to a tractor belt, the latter being shown in section;

Fig.2 is a top plan view of Fig. 1, but

2 with the belt shown 'in dotted lines;'and

1 3 is a section, taken 'on the line A-B of 2, and likewise showing the belt in dotted lines. 4

The tractor belt to which the creeper 1s to .30 be applied may be-of any preferred form.

In the'present instance,- the one'illustrated,

and which is indicated generally by the numeral 6, comprises a continuous tread portion 6' which. is providedon its outerface with spaced longitudinal ground-emgaging ribs 6? and c nnecting portionsfi, and with hollowsfi tween said ribs; the; inner face of the aforesaid tread portion 6' being formed with a continuous median guide rib 6? which is itself splittransversely' at intervals to formblocksor members 6 (Fig. 3). But it'isto be understood, however, that the belt itself forms no part what-' ever of my invention, and that any type of endless tractor belt which" is suitable for;

' the purpose can be. utilized. The detailed description-above is merely given by. way of I complete explanation of the particular structure illustrated and has no limiting effect upon the actual invention.

' The. improved creeper comprises a base or body member 1, constructed of steel and shaped to fit conformably overand against the tread portion of the particular belt with 5 which it is dmigned to be used, as will be understood from Figs. 1 and 3. This mem- 732,093, andin France September 22, 1923.

formed at itsouter end with a tenon 5 which is engaged in an opening or slot 5' in the ad acent end of the-base member 1; the said base member '1 and the lugs 3 being clamped together by means of nuts 4' which are screwed over pins,or studs 4 fixed to said lugs and projecting through holes 4 in the base 1. .The outer faces of the lugs are beveled, as indicated at 3' (Fig. 1) to facili- Itate their engagement by the supporting, guiding and driving rollers (not shown) usually comprised in the tractor mechanism.

I claim as my invention 1. A creeper for-an. endless track belt of the type which consists of a continuous tread portion provided onits outer facewith spaced, longitudinal ground-engaging r1bs and on its inner face with acontinuous median gulde rib; sa1d creeper comprising a base member adapted to extend trans-' versely across the outer face of the tread portion. of the-belt and to fit conformably over the ground-engaging ribs thereon,

ground-gripping ribs onthe base member,

and means for securing said base member to the said tread portion of the belt.

2. A creeper for ancndless track"belt,

comprising a base member adapted to extend transversely across and fit conformably against the outer surface of the belt, groundgripping ribs on the base member, clamping lugs adapted to be disposed against the in ner surface ofthe belt directly opposite the base member, I and means connecting said lugs and base member together but devoid of engagement with the belt.

3. A creeper, according to claim 2, in which the connecting means comprise threaded studsfixed to the clamping lugs and projecting through holes in the base member, and nuts-fitted on the projecting portions .of said studs and adapted to be tightened into bindingengagement with the adjacent face of said base member.

4. A creeper for an .endless track belt,

' comprising a base member adapted to extend transversely across and fitagainst the outer surface of the belt and to project beyond the same at opposite ends,sa1d ends having openings therein, ground-gripping ribs on the base member, clamping lugs adapted to be disposed against the inner surface of the belt directly opposite the ends of the base member and having tenons 'for engagement in said openings, and means separate from said tenons connecting the for an endless track belt,

tend transver l across and fit against the outer surface 0 the belt and to project beyond the same at opposite ends, said. ends having stud holes therein and slots beyond said holes, ground-grippin ribs on the base member, clamping lugs a a sed againstthe inner sur ace of the-belt irectly opposite the ends of the base mem- 5 her and hiwing tenons for-engagement in said slots, threaded studs fixed to said lugs I and projecting through said studholes, and nuts fitted on the projectin portions of the studs and adapted to be tightened into bind- '0 in" engagement with the adjacent'face of the base member. I

In testimony whereof I aflix my signature} ADOLPHE KEGRESSE.

ted to be dis- 

